EP2965437B1 - Mobile device for power reduction and method thereof - Google Patents

Mobile device for power reduction and method thereof Download PDF

Info

Publication number
EP2965437B1
EP2965437B1 EP14759965.8A EP14759965A EP2965437B1 EP 2965437 B1 EP2965437 B1 EP 2965437B1 EP 14759965 A EP14759965 A EP 14759965A EP 2965437 B1 EP2965437 B1 EP 2965437B1
Authority
EP
European Patent Office
Prior art keywords
power mode
electronic device
data
low power
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14759965.8A
Other languages
German (de)
French (fr)
Other versions
EP2965437A1 (en
EP2965437A4 (en
Inventor
Seong-Wook Song
Jin-Hee Cheon
Da-Hae CHONG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP2965437A1 publication Critical patent/EP2965437A1/en
Publication of EP2965437A4 publication Critical patent/EP2965437A4/en
Application granted granted Critical
Publication of EP2965437B1 publication Critical patent/EP2965437B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725Cordless telephones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0222Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave in packet switched networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0241Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where no transmission is received, e.g. out of range of the transmitter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0251Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to an electronic device and a method performed by an electronic device. More particularly, the present disclosure relates to technology for reducing power consumption of a mobile electronic device.
  • Such mobile devices are supplied with power from batteries with limited capacities. Therefore, techniques for maintaining a battery for a long time using low power and extending the life of the battery are needed.
  • various multimedia services such as a broadcast service, a wireless internet service, a camera service, and a music playback service are provided through such mobile devices, it becomes beneficial to develop power saving techniques for efficiently saving the power of batteries of the mobile devices and extending lives thereof.
  • an aspect of the present disclosure is to provide devices and methods for saving power in a mobile electronic device.
  • Another aspect of the present disclosure is to provide devices and methods for extending a life of a battery of a mobile electronic device driven by the battery and provided with a wireless multimedia service.
  • a mobile electronic device according to independent claim 1 is provided. Further aspects of the present disclosure are provided by the dependent claims 2-13.
  • FIGS. 1 to 10C and the various embodiments are used to merely describe the principles of the present disclosure, and thus should not be construed as limitations on the scope of the present disclosure.
  • Various embodiments of the present disclosure described below relate to devices and methods for saving power in a mobile electronic device.
  • Various embodiments of the present disclosure are applied to terminals such as smartphones and cell phones that access a wireless communication network such as a 3 rd Generation (3G) system or a 4 th Generation (4G) Long Term Evolution (LTE) system to perform communication.
  • a wireless communication network such as a 3 rd Generation (3G) system or a 4 th Generation (4G) Long Term Evolution (LTE) system to perform communication.
  • 3G 3 rd Generation
  • 4G 4 th Generation
  • LTE Long Term Evolution
  • FIG. 1 is a diagram illustrating a state transition of Radio Resource Control (RRC) in a 3G communication system according to an embodiment of the present disclosure.
  • RRC Radio Resource Control
  • 3GPP 3rd Generation Partnership Project
  • a terminal in an active state and may instantly transmit or receive data. Because both a Receiver (Rx) and a Transmitter (Tx) are operating, power consumption is high.
  • a cell_ forward access channel (CELL _FACH) state 120 the terminal is in a high power idle state and may instantly respond to a request from a base station. In this state, only a downlink (DL) is operated. Because the Tx does not consume power, power consumption is lower than that of the CELL_DCH state 110. However, because the Rx is activated, power is continuously consumed.
  • a cell_ paging channel (CELL_PCH) or (URA_PCH) state 130
  • the terminal In an idle state and may receive only paging from a base station. In this state, only the DL is periodically woken up to monitor the paging. Because a period where a modulator and demodulator (modem) is active is minimized, power consumption is low in comparison with the CELL_DCH state 110 or the CELL_FACH state 120.
  • an inactivity timer t1 is defined for a state transition from the CELL_DCH state 110 to the CELL_FACH state 120
  • an inactivity timer t2 is defined for a state transition from the CELL_FACH state 120 to the CELL_PCH state 130.
  • the base station changes the CELL_DCH state 110 to the CELL_FACH state 120 after waiting for inactivity timer t1 to trigger the transition.
  • the inactivity timer represents a redundant wait time that passes in a state where data transmission does not occur before the state transition. That is, the inactivity timer t1 represents a time for waiting in the state where data transmission does not occur before the CELL_DCH state 110 is changed to the CELL_FACH state 120, and the inactivity timer t2 represents a time for waiting until the CELL_FACH state 120 is changed to the CELL_PCH state 130.
  • the base station monitors data traffic and initiates the state transitions of RRC so as to minimize power consumption of the terminal.
  • an additional signal message may be transmitted/received, thus causing overhead.
  • the state transition of RRC occurs. For example, in the case where data transmission does not occur during the inactivity timer t1, the CELL_DCH state 110 is changed to the CELL_FACH state 120. Further, in the case where the data transmission still does not occur during the inactivity timer t2, the CELL_FACH state 120 is changed to the CELL_PCH state 130.
  • FIG. 2 is a diagram illustrating a state transition of RRC in a 4G communication system according to an embodiment of the present disclosure.
  • an RRC_CONNECTED state 210 is an active state in which transmission/reception of data is enabled. In this state, power consumption of a transmitter/receiver is high.
  • An RRC_IDLE state 220 is an idle state in which only reception of paging is enabled. In the case of the 4G system, when data transmission does not occur during the inactivity timer t1, the RRC_CONNECTED state 210 is changed to the RRC_IDLE state 220 to thereby reduce power consumption.
  • a method of controlling a physical layer regardless of the RRC state may be considered. For example, a diversity antenna may be switched off. However, according to this method, due to reception performance degradation, a data transmission time becomes longer, and thus power consumption may increase.
  • the state transition is allowed to occur only when a data stop period is 5-10 seconds or longer to be sufficiently long by increasing the inactivity timer.
  • a data transmission rate greatly increases, and thus a period used for actual data transmission in a high-power operation state of a terminal greatly decreases. Therefore, the low-power operation method by the state transition of RRC is limited in terms of reduction of power consumed in a data non-transmission period.
  • a data reception rate may decrease. Thus, application of this method is limited.
  • a data transmission state is observed to operate a terminal in a low-power mode when a data non-transmission period where data transmission/reception does not occur is detected.
  • FIG. 3 is a diagram illustrating a transition of a power mode in a 3G communication system according to an embodiment of the present disclosure.
  • the active state illustrated in FIG. 1 i.e. the CELL_DCH state 110, is divided into a CELL_DCH normal power mode 112 and a CELL_DCH low power mode 114.
  • the terminal switches from the CELL_DCH normal power mode 112 to the CELL_DCH low power mode 114 after a lapse of an inactivity timer t11 that is smaller than t1. That is, when the data non-transmission period where data transmission/reception does not occur for the predefined time t11 is detected, in the active state where data transmission/reception is enabled, the terminal switches from the CELL_DCH normal power mode 112 to the CELL_DCH low power mode 114.
  • the predefined time t11 is shorter than the time t1 that is defined for transition from the active state 110 to the high-power idle state 120 as illustrated in FIG. 1 .
  • the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114.
  • a control channel e.g. a high speed-shared control channel (HS-SCCH)
  • the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114.
  • the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114.
  • the terminal when it is determined that there is data to be transmitted to the base station, the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114. In this manner, after the terminal switches to the active state, power consumption may be reduced in a period where data transmission/reception does not occur.
  • FIG. 4 is a diagram illustrating a transition of a power mode in a 4G communication system according to an embodiment of the present disclosure.
  • the RRC_CONNECTED state 210 is divided into an RRC_CONNECTED normal power mode 212 and an RRC_CONNECTED low power mode 214.
  • the terminal switches from the RRC_CONNECTED normal power mode 212 to the RRC_CONNECTED low power mode 214 after a lapse of an inactivity timer t11 that is smaller than t1. That is, when the data non-transmission period where data transmission/reception does not occur for the predefined time t11 is detected, in the active state where data transmission/reception is enabled, the terminal switches from the RRC_CONNECTED normal power mode 212 to the RRC_CONNECTED low power mode 214.
  • the predefined time t11 is shorter than the time t1 that is defined for transition from the active state 210 to the idle state 220 as illustrated in FIG. 2 .
  • the terminal returns to the RRC_CONNECTED normal power mode 212 from the RRC_CONNECTED low power mode 214.
  • the terminal returns to the RRC_CONNECTED normal power mode 212 from the RRC_CONNECTED low power mode 214.
  • PDCCH Physical Downlink Control Channel
  • the terminal when it is determined that there is data to be transmitted to the base station, the terminal returns to the RRC_CONNECTED normal power mode 212 from the RRC_CONNECTED low power mode 214. In this manner, after the terminal switches to the active state, power consumption may be reduced in a period where data transmission/reception does not occur.
  • FIGS. 5A to 5D are block diagrams illustrating a mobile electronic device for a power saving operation according to an embodiment of the present disclosure. These configurations are merely examples of applying various embodiments of the present disclosure to a wireless terminal. Therefore, it should be noted that various embodiments of the present disclosure are not limited to the configurations and may be used in other similar electronic devices.
  • the mobile electronic device includes a control unit 510, a battery 520, a transceiver 505, and an antenna unit 500.
  • the antenna unit 500 includes a plurality of antennas ANT1 to ANT3.
  • the battery 520 supplies operating power to components of the electronic device.
  • the transceiver 505 performs a transmission process to a signal to be transmitted and performs a reception process to a received signal.
  • the transceiver 505 may include a Baseband (BB) unit 530 and a radio frequency (RF) unit 540.
  • BB Baseband
  • RF radio frequency
  • the transceiver 505 may be implemented as a single chip.
  • the transceiver 505 may be implemented as two chips.
  • the transceiver 505 may be implemented as three or more chips.
  • the BB unit 530 of the transceiver 505 processes data to be transmitted in a baseband, and processes received data processed in the RF unit 540 in the baseband.
  • the BB unit 530 may include digital BB units 532 and 534 having processors and memories and analog BB units 536 and 538 having Analog-to-Digital Converters (ADCs) and filters.
  • the RF unit 540 performs an RF process to the data to be transmitted, which have been processed in the BB unit 530, and performs the RF process to the data received through the antenna unit 500.
  • the RF unit 540 may include an analog filter, a Low-Noise Amplifier (LNA), a mixer, a Voltage-Controlled Oscillator (VCO), a frequency synthesizer, and a Power Amplifier (PA).
  • the plurality of antennas ANT1 to ANT3 included in the antenna unit 500 is for signal transmission between the base station and the mobile electronic device, i.e. the wireless terminal, in a wireless communication system. Although it is illustrated that the plurality of antennas are not classified into transmitting antennas and receiving antennas, the plurality of antennas may include an appropriate number of transmitting antennas and an appropriate number of receiving antennas.
  • the control unit 510 controls a power saving operation according to various embodiments of the present disclosure.
  • the control unit 510 controls the transceiver 505 and controls an operation of a timer (not illustrated) (e.g. inactivity timer t1, t11, and t2). That is, the control unit 510 may control the transceiver 505 so that the transceiver 505 is operated in a normal power mode or a low power mode.
  • the normal power mode represents a mode in which power is normally supplied. This normal power mode is a relatively high power mode in comparison with the low power mode.
  • the low power mode is a mode for reducing power consumption of the mobile electronic device. In this mode, power is adjusted to be supplied in comparison with the case where power is normally supplied.
  • the control unit 510 may be separated from the transceiver 505.
  • the control unit 510 may be included in the transceiver 505.
  • the control unit 510 may be included in the BB unit 530 or the RF unit 540.
  • partial antennas from among the plurality of antennas ANT1 to ANT3 included in the antenna unit 500 may be turned off.
  • the control unit 510 may control an antenna path unit 550 in response to a power mode control signal so as to block paths between the partial antennas and the transceiver 505, thereby turning off the partial antennas.
  • power supplied to corresponding components of the RF unit e.g. the analog filter, low-noise amplifier, and mixer
  • the antenna unit 500 includes only the plurality of antennas ANT1 to ANT3, this configuration is just an example.
  • the antenna unit 500 may include partial elements (e.g.
  • the operation of turning off the partial antennas may include an operation of blocking the paths between the partial antennas and the transceiver 505 and an operation of blocking the power supplied to the partial elements.
  • an effect of power saving may be obtained.
  • the power saving effect may be improved.
  • an adjusted voltage supplied in the low power mode may have a lower level than that of a voltage normally supplied to partial components (e.g. power amplifier) of the transceiver 505.
  • an adjusted voltage supplied in the low power mode may be a voltage that enables partial components (e.g. analog-to-digital converter) of the transceiver 505 to perform only partial operations (e.g. 5-stage conversion operation) of normal operations (e.g. 10-stage conversion operation).
  • control unit 510 changes a power mode of the electronic device into the low power mode when a data non-transmission period is detected during a predefined time in an active state.
  • the predefined time may be set to be shorter that a time set to change the active state to an idle state.
  • the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring a control channel or transmission data in the active state. When the control unit 510 detects that there is data to be received as a result of monitoring the control channel in the low power mode, the control unit 510 further performs an operation of changing a power supply mode of the electronic device into the normal power mode. When the control unit 510 detects that there is data to be transmitted as a result of monitoring the transmission data in the low power mode, the control unit 510 further performs the operation of changing the power supply mode of the electronic device into the normal power mode.
  • the control channel may be one of the HS-SCCH and the PDCCH.
  • the control unit 510 low-power adjusts power supplied to a partial component of the electronic device.
  • the partial component of the electronic device may be one of the radio frequency unit and the baseband unit.
  • the partial component of the electronic device may be a component on a reception path.
  • the partial component of the electronic device may be a component on a transmission path.
  • control unit 510 blocks at least one of the paths between the transceiver and the plurality of antennas when the data non-transmission period is detected during the predefined time in the active state where data transmission/ reception is enabled.
  • the transceiver includes the radio frequency unit and the baseband unit.
  • the predefined time may be set to be shorter that the time set to change the active state to the idle state.
  • the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/received as a result of monitoring the control channel or transmission data, the control unit 510 further performs an operation of opening the blocked paths between the transceiver and the plurality of antennas.
  • the control channel may be one of the HS-SCCH and the PDCCH.
  • control unit 510 low-power adjusts power supplied to at least one of a plurality of components included in the transceiver when the data non-transmission period is detected during the predefined time in the active state where data transmission/reception is enabled.
  • the transceiver includes the radio frequency unit and the baseband unit.
  • the predefined time may be set to be shorter than a time set to change the active state to an idle state.
  • the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/received as a result of monitoring the control channel or transmission data, the control unit 510 further performs an operation of normalizing the low-power adjusted power.
  • the control channel may be one of the HS-SCCH and the PDCCH.
  • FIG. 6 is a flowchart illustrating a process of a power saving operation according to an embodiment of the present disclosure. This process may be controlled by the control unit 510 illustrated in FIGS. 5A to 5D .
  • the power saving operation is performed in the case of a downlink from a base station to a terminal.
  • this power saving operation may be performed in substantially the same manner in the case of an uplink from the terminal to the base station.
  • a timer value is initialized to be 0 in operation 602.
  • demodulation and decoding operations are periodically performed to the control channel such as the HS-SCCH or PDCCH.
  • the timer value is initialized to be 0 in operation 610.
  • It is determined whether a current power mode is the low power mode in operation 612. In the case of the low power mode, the power mode is changed to the normal power mode to receive data in operation 614. In the case of the normal power mode, the process proceeds to operation 604. According to data packets arriving in each cycle, the operations of the right loop (604 ⁇ 606 ⁇ 608 ⁇ 610 ⁇ 612 or 604 ⁇ 606 ⁇ 608 ⁇ 610 ⁇ 612 ⁇ 614) are repeated.
  • a result of the decoding operation for the control channel such as the HS-SCCH or PDCCH is determined to be a failure.
  • the timer value increases in operation 616.
  • the operations of the left loop (604 ⁇ 606 ⁇ 608 ⁇ 616 ⁇ 618) are repeatedly performed until the timer value reaches t11.
  • it is determined that the timer value reaches t11 in operation 618 it is determined that the data packets are not received for a while, and the power mode is changed to the low power mode in operation 620.
  • FIG. 7 is a flowchart illustrating a process of a power saving operation according to another embodiment of the present disclosure. This process may be controlled by the control unit 510 illustrated in FIGS. 5A to 5D .
  • the power saving operation is performed in the case of a downlink from a base station to a terminal.
  • this power saving operation may be performed in substantially the same manner in the case of an uplink from the terminal to the base station.
  • Operations 702 to 714 are the same as operations 602 to 614 illustrated in FIG. 6
  • operations 720, 722, and 726 are the same as operations 616, 618, and 620 illustrated in FIG. 6 . That is, the process illustrated in FIG. 7 further includes operations 716, 718, and 724 in comparison with the process illustrated in FIG. 6 .
  • a value of signal quality such as a Signal to Interference Ratio (SIR) is determined.
  • SIR Signal to Interference Ratio
  • the power mode is changed to the low power mode in operation 726.
  • the power mode is changed to the normal power mode in operation 718. That is, the SIR level is determined again in order to decode the common control channel such as the HS-SCCH or PDCCH that indicates data that will possibly arrive, even after data transmission is stopped.
  • FIGS. 8A and 8B are diagrams illustrating that power consumption is reduced according to embodiments of the present disclosure.
  • FIG. 8A illustrates power consumption according to state transition in a 3G communication system of the related art
  • FIG. 8B illustrates power consumption in accordance with a power saving operation according to the embodiments of the present disclosure.
  • FIGS. 9A and 9B are diagrams illustrating that power consumption is reduced according to embodiments of the present disclosure.
  • FIG. 9A illustrates power consumption according to state transition in a 4G communication system of the related art
  • FIG. 9B illustrates power consumption in accordance with a power saving operation according to an embodiment of the present disclosure.
  • FIGS. 10A to 10C are diagrams illustrating various modifications of a power saving operation according to embodiments of the present disclosure. These diagrams illustrate various examples of the power saving operation performed by the control unit 510 illustrated in FIGS. 5A to 5D .
  • FIG. 10A is a diagram illustrating a power saving operation performed according to an embodiment of the present disclosure.
  • the transceiver 505 includes Digital BB (DBB) units 532 and 534, Analog BB (ABB) units 536 and 538, RF integrated circuits (ICs) 542 and 544, and a Power Amplifier (PA) 546.
  • DBB Digital BB
  • ABB Analog BB
  • PA Power Amplifier
  • the DBB units 532 and 534 and the ABB units 536 and 538 constitute the BB unit of the transceiver 505.
  • the RF ICs 542 and 544 and the power amplifier 546 constitute the RF unit of the transceiver 505.
  • the DBB unit 532, the ABB unit 536, and the RF IC 542 are components on a reception path
  • the DBB unit 534, the ABB unit 538, the RF IC 544, and the power amplifier 546 are components on a transmission path.
  • this division of the components of the transceiver is merely for differentiating the components by the transmission and reception paths and functions based on data processing operations. Therefore, in the case where the components are actually implemented as chips, the components may be differently implemented.
  • the DBB units 532 and 534 and the ABB units 536 and 538 may be implemented as a single chip.
  • the DBB units 532 and 534 may be implemented as a single chip, and the ABB units 536 and 538 may be implemented as another single chip.
  • the RF ICs 542 and 544 may be implemented as a single chip.
  • the DBB units 532 and 534, the ABB units 536 and 538, and the RF ICs 542 and 544 may be implemented as a single chip.
  • the DBB units 532 and 534 may include a processor, a memory and etc.
  • the ABB units 536 and 538 may include an ADC, filter and etc.
  • the RF ICs 542 and 544 may include an analog filter, a low noise amplifier, a mixer, a VCO, a frequency synthesizer and etc.
  • transmitting antennas and receiving antennas may be combined. Although it is illustrated that one transmitting antenna ANT_TX is combined with two receiving antennas ANT_RX1 and ANT_RX2, the numbers of the antennas are not limited.
  • the antenna path unit 550 forms reception paths between the receiving antennas ANT_RX1 and ANT_RX2 and a receiver (RF IC 542), or a reception path between the transmitting antenna ANT_TX and a transmitter (power amplifier 546).
  • This antenna path unit 550 may include a switch.
  • These electronic device components may be operated in the normal power mode or low power mode according to a power mode control signal provided from the control unit 510 illustrated in FIGS. 5A to 5D .
  • the normal power represents a voltage that is supplied in the active state such as the CELL_DCH state or RRC_CONNECTED state where data transmission/reception is enabled.
  • the control signal is a signal for triggering the low power mode when the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data.
  • the control signal may be provided to partial components from among the antenna path unit 550, the power amplifier 546, the RF ICs 542 and 544, the ABBs 536 and 538, and the DBBs 532 and 534.
  • FIG. 10B is a diagram illustrating a power saving operation performed according to an embodiment of the present disclosure.
  • the control unit 510 blocks at least one of the paths between the transceiver and the plurality of antennas when the data non-transmission period is detected during a predefined time in the active state where data transmission/reception is enabled.
  • the control unit 510 may block power supplied to components of the transceiver which correspond to the blocked path.
  • the predefined time may be set to be shorter that the time set to change the active state to the idle state.
  • the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state.
  • the control unit 510 further performs an operation of opening the blocked paths between the transceiver and the plurality of antennas.
  • a reception path (e.g. path 2) of the antenna path unit 550 through one of the two receiving antennas ANT_RX1 and ANT_RX2 may be blocked in response to the power mode control signal.
  • a transmission path of the antenna path unit 550 through one of the plurality of transmitting antennas may be blocked in response to the power mode control signal. That is, when the reception path or transmission path is blocked, power supplied to components of the transceiver corresponding to the blocked path may also be blocked.
  • the antenna unit 500 may include partial elements (e.g. capacitor) supplied with power, in addition to the plurality of antennas. In this case, an operation of blocking paths between partial antennas and the transceiver and an operation of blocking the power supplied to the partial elements may be further included. Therefore, since the power supplied to components of the transceiver corresponding to the blocked paths of the antenna path unit 550 and/or elements that may be included in the antenna unit 500 is blocked, power consumption may be reduced.
  • partial elements e.g. capacitor
  • FIG. 10C is a diagram illustrating a power saving operation performed according to an embodiment of the present disclosure.
  • the control unit 510 low-power adjusts power supplied to at least one of a plurality of components of the transceiver when the data non-transmission period is detected during a predefined time in the active state where data transmission/reception is enabled.
  • the predefined time may be set to be shorter than the time set to change the active state to the idle state.
  • the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/ received as a result of monitoring, the control unit 510 performs an operation of normalizing the low-power adjusted power.
  • a power supply voltage supplied to partial components from among components of the DBB units 532 and 534, the ABB units 536 and 538, the RF ICs 542 and 544, and the power amplifier 546 may be adjusted to be decreased in response to the power mode control signal in the low power mode. For example, when it is detected that there is not data to be transmitted to a base station and thus the power mode is changed to the low power mode, a level of the power supply voltage supplied to partial components (e.g. power amplifier) from internal components of the DBB unit 532, the ABB unit 536, and the RF IC 542 may be adjusted to be decreased. For another example, in the case of performing a 10-step conversion operation of an ADC included in the ABB unit 536, the power supply voltage may be such supplied that only 5 steps are performed.
  • the power mode is changed to the low power mode in a data stop period there is not data to be transmitted/received. Power is less consumed in the low power mode than in the active state where high power is consumed, thereby reducing power consumption of the mobile electronic device.
  • program commands for performing operations implemented by various computers may be recorded in a computer-readable medium.
  • the computer readable medium may include one or a combination of a program command, a data file, and a data structure.
  • the program command may be specially designed for the present disclosure or may be well known and available in the art.
  • Examples of the computer readable recording medium include hardware devices specially configured to store and perform the program commands, such as hard disks, floppy disks, magnetic media such as magnetic tapes, optical media such as CD-ROMs and DVDs, magneto-optical media such as optical disks, ROMs, RAMs, and flash memories.
  • Examples of the program command include machine language codes made by compilers and high-level language codes that can be executed by computers using interpreters.
  • a computer-readable recording medium in the computer program is stored is also included in the present disclosure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
  • Transceivers (AREA)

Description

    Technical Field
  • The present disclosure relates to an electronic device and a method performed by an electronic device. More particularly, the present disclosure relates to technology for reducing power consumption of a mobile electronic device.
  • Background Art
  • Electronic devices have been developed to provide greater mobility and convenience for users. Cell phones and smartphones of the related art are representative mobile electronic devices. In the field of computers, instead of desktop computers, wireless laptops and wireless tablets are increasingly used. Digital cameras also have developed to be wirelessly operated.
  • Such mobile devices are supplied with power from batteries with limited capacities. Therefore, techniques for maintaining a battery for a long time using low power and extending the life of the battery are needed. In particular, as various multimedia services such as a broadcast service, a wireless internet service, a camera service, and a music playback service are provided through such mobile devices, it becomes beneficial to develop power saving techniques for efficiently saving the power of batteries of the mobile devices and extending lives thereof.
  • The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the present disclosure.
  • Prior art documents EP 2 458 922 A1 , US 2012/122511 A1 , US 2013/021995 A1 and US 8 036 710 B2 disclose mobile electronic devices comprising a plurality of antennas, wherein based on signals received from a control channel some of the antennas can be operated in a low power mode capable of only receiving data and not transmitting.
  • Disclosure of Invention Solution to Problem
  • Aspects of the present disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide devices and methods for saving power in a mobile electronic device.
  • Another aspect of the present disclosure is to provide devices and methods for extending a life of a battery of a mobile electronic device driven by the battery and provided with a wireless multimedia service.
  • In accordance with an aspect of the present disclosure, a mobile electronic device according to independent claim 1 is provided. Further aspects of the present disclosure are provided by the dependent claims 2-13.
  • In accordance with another aspect of the present disclosure, a method performed by an electronic device according to independent claim 14 is provided.
  • Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the present disclosure.
  • Brief Description of Drawings
  • The above and other aspects, features, and advantages of certain embodiments of the present disclosure will be more apparent from the following description when taken in conjunction with the accompanying drawings, in which:
    • FIG. 1 is a diagram illustrating a state transition of Radio Resource Control (RRC) in a 3rd Generation (3G) communication system according to an embodiment of the present disclosure;
    • FIG. 2 is a diagram illustrating a state transition of RRC in a 4th Generation (4G) communication system according to an embodiment of the present disclosure;
    • FIG. 3 is a diagram illustrating a transition of a power mode in a 3G communication system according to an embodiment of the present disclosure;
    • FIG. 4 is a diagram illustrating a transition of a power mode in a 4G communication system according to an embodiment of the present disclosure;
    • FIGS. 5A, 5B, 5C, and 5D are block diagrams illustrating a mobile electronic device for a power saving operation according to various embodiments of the present disclosure;
    • FIG. 6 is a flowchart illustrating a process of a power saving operation according to an embodiment of the present disclosure;
    • FIG. 7 is a flowchart illustrating a process of a power saving operation according to another embodiment of the present disclosure;
    • FIGS. 8A is a diagram illustrating that power consumption is reduced according to the related art;
    • FIG. 8B is diagram illustrating that power consumption is reduced according to an embodiment of the present disclosure;
    • FIGS. 9A is a diagram illustrating that power consumption is reduced according to the related art;
    • FIG. 9B is a diagram illustrating that power consumption is reduced according to an embodiment of the present disclosure; and
    • FIGS. 10A, 10B, and 10C are diagrams illustrating various modifications of a power saving operation according to various embodiments of the present disclosure.
  • Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.
  • Best Mode for Carrying out the Invention
  • The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope of the present disclosure as defined by the appended claims. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
  • The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims.
  • In this specification, FIGS. 1 to 10C and the various embodiments are used to merely describe the principles of the present disclosure, and thus should not be construed as limitations on the scope of the present disclosure.
  • It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.
  • Various embodiments of the present disclosure described below relate to devices and methods for saving power in a mobile electronic device. Various embodiments of the present disclosure are applied to terminals such as smartphones and cell phones that access a wireless communication network such as a 3rd Generation (3G) system or a 4th Generation (4G) Long Term Evolution (LTE) system to perform communication. However, it will be understood by those skilled in the art that various embodiments of the present disclosure may also be applied to electronic devices such as wirelessly accessible laptops, tablets, digital cameras driven by batteries, and the like.
  • State transition operations for supporting low-power communications in terminals of 3G and 4G wireless communication systems are described below. Power mode transition operations for power saving operations in the terminals according to various embodiments of the present disclosure will also be described. Power saving operations according to various embodiments of the present disclosure will also be described.
  • FIG. 1 is a diagram illustrating a state transition of Radio Resource Control (RRC) in a 3G communication system according to an embodiment of the present disclosure. 3rd Generation Partnership Project (3GPP) wireless communication standards support low-power communication by controlling a transmitting/receiving state of a terminal through RRC.
  • Referring to FIG. 1, in a Cell_Dedicated Channel (CELL_DCH) state 110, a terminal is in an active state and may instantly transmit or receive data. Because both a Receiver (Rx) and a Transmitter (Tx) are operating, power consumption is high. In a cell_ forward access channel (CELL _FACH) state 120, the terminal is in a high power idle state and may instantly respond to a request from a base station. In this state, only a downlink (DL) is operated. Because the Tx does not consume power, power consumption is lower than that of the CELL_DCH state 110. However, because the Rx is activated, power is continuously consumed. In a cell_ paging channel (CELL_PCH) or (URA_PCH) state 130, the terminal is in an idle state and may receive only paging from a base station. In this state, only the DL is periodically woken up to monitor the paging. Because a period where a modulator and demodulator (modem) is active is minimized, power consumption is low in comparison with the CELL_DCH state 110 or the CELL_FACH state 120. According to 3GPP standards, an inactivity timer t1 is defined for a state transition from the CELL_DCH state 110 to the CELL_FACH state 120, and an inactivity timer t2 is defined for a state transition from the CELL_FACH state 120 to the CELL_PCH state 130. As will be discussed in more detail with reference to FIG. 8A, after a period P2 where data transmission occurs, the base station changes the CELL_DCH state 110 to the CELL_FACH state 120 after waiting for inactivity timer t1 to trigger the transition. Here, the inactivity timer represents a redundant wait time that passes in a state where data transmission does not occur before the state transition. That is, the inactivity timer t1 represents a time for waiting in the state where data transmission does not occur before the CELL_DCH state 110 is changed to the CELL_FACH state 120, and the inactivity timer t2 represents a time for waiting until the CELL_FACH state 120 is changed to the CELL_PCH state 130.
  • Referring to a 3GPP network, the base station monitors data traffic and initiates the state transitions of RRC so as to minimize power consumption of the terminal. However, for the state transition of RRC, an additional signal message may be transmitted/received, thus causing overhead. Further, in the case where a period of traffic stop is sufficiently long, i.e. in the case where an inactivation period is greater than a determined value of inactivity timer, the state transition of RRC occurs. For example, in the case where data transmission does not occur during the inactivity timer t1, the CELL_DCH state 110 is changed to the CELL_FACH state 120. Further, in the case where the data transmission still does not occur during the inactivity timer t2, the CELL_FACH state 120 is changed to the CELL_PCH state 130.
  • FIG. 2 is a diagram illustrating a state transition of RRC in a 4G communication system according to an embodiment of the present disclosure.
  • Referring to FIG. 2, an RRC_CONNECTED state 210 is an active state in which transmission/reception of data is enabled. In this state, power consumption of a transmitter/receiver is high. An RRC_IDLE state 220 is an idle state in which only reception of paging is enabled. In the case of the 4G system, when data transmission does not occur during the inactivity timer t1, the RRC_CONNECTED state 210 is changed to the RRC_IDLE state 220 to thereby reduce power consumption.
  • Besides the above-described low-power operation methods, a method of controlling a physical layer regardless of the RRC state may be considered. For example, a diversity antenna may be switched off. However, according to this method, due to reception performance degradation, a data transmission time becomes longer, and thus power consumption may increase.
  • As described above, in the case of the low-power operation method by the state transmission of RRC, a message overhead and transition time are great. Therefore, the state transition is allowed to occur only when a data stop period is 5-10 seconds or longer to be sufficiently long by increasing the inactivity timer. However, as wireless communication standards develop, a data transmission rate greatly increases, and thus a period used for actual data transmission in a high-power operation state of a terminal greatly decreases. Therefore, the low-power operation method by the state transition of RRC is limited in terms of reduction of power consumed in a data non-transmission period. In the case of the low-power operation method for the physical layer, a data reception rate may decrease. Thus, application of this method is limited.
  • In order to overcome the limitations, according to various embodiments of the present disclosure, in the active state, i.e. the CELL_DCH or RRC_CONNECTED state, a data transmission state is observed to operate a terminal in a low-power mode when a data non-transmission period where data transmission/reception does not occur is detected.
  • FIG. 3 is a diagram illustrating a transition of a power mode in a 3G communication system according to an embodiment of the present disclosure.
  • Referring to FIG. 3, the active state illustrated in FIG. 1, i.e. the CELL_DCH state 110, is divided into a CELL_DCH normal power mode 112 and a CELL_DCH low power mode 114. The terminal switches from the CELL_DCH normal power mode 112 to the CELL_DCH low power mode 114 after a lapse of an inactivity timer t11 that is smaller than t1. That is, when the data non-transmission period where data transmission/reception does not occur for the predefined time t11 is detected, in the active state where data transmission/reception is enabled, the terminal switches from the CELL_DCH normal power mode 112 to the CELL_DCH low power mode 114. Here, the predefined time t11 is shorter than the time t1 that is defined for transition from the active state 110 to the high-power idle state 120 as illustrated in FIG. 1. Thereafter, when it is determined that there is data to be transmitted or received by detecting a control channel (e.g. a high speed-shared control channel (HS-SCCH)), the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114. For example, when it is determined that there is data allocated to the terminal, i.e. data to be received by the terminal, by detecting the HS-SCCH from the base station, the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114. For another example, when it is determined that there is data to be transmitted to the base station, the terminal returns to the CELL_DCH normal power mode 112 from the CELL_DCH low power mode 114. In this manner, after the terminal switches to the active state, power consumption may be reduced in a period where data transmission/reception does not occur.
  • FIG. 4 is a diagram illustrating a transition of a power mode in a 4G communication system according to an embodiment of the present disclosure.
  • Referring to FIG. 2, the RRC_CONNECTED state 210 is divided into an RRC_CONNECTED normal power mode 212 and an RRC_CONNECTED low power mode 214. The terminal switches from the RRC_CONNECTED normal power mode 212 to the RRC_CONNECTED low power mode 214 after a lapse of an inactivity timer t11 that is smaller than t1. That is, when the data non-transmission period where data transmission/reception does not occur for the predefined time t11 is detected, in the active state where data transmission/reception is enabled, the terminal switches from the RRC_CONNECTED normal power mode 212 to the RRC_CONNECTED low power mode 214. Here, the predefined time t11 is shorter than the time t1 that is defined for transition from the active state 210 to the idle state 220 as illustrated in FIG. 2. Thereafter, when it is determined that there is data to be transmitted/received, the terminal returns to the RRC_CONNECTED normal power mode 212 from the RRC_CONNECTED low power mode 214. For example, when it is determined that there is data allocated to the terminal, i.e. data to be received by the terminal, by detecting a Physical Downlink Control Channel (PDCCH) from the base station, the terminal returns to the RRC_CONNECTED normal power mode 212 from the RRC_CONNECTED low power mode 214. For another example, when it is determined that there is data to be transmitted to the base station, the terminal returns to the RRC_CONNECTED normal power mode 212 from the RRC_CONNECTED low power mode 214. In this manner, after the terminal switches to the active state, power consumption may be reduced in a period where data transmission/reception does not occur.
  • FIGS. 5A to 5D are block diagrams illustrating a mobile electronic device for a power saving operation according to an embodiment of the present disclosure. These configurations are merely examples of applying various embodiments of the present disclosure to a wireless terminal. Therefore, it should be noted that various embodiments of the present disclosure are not limited to the configurations and may be used in other similar electronic devices.
  • Referring to FIGS. 5A to 5D, the mobile electronic device includes a control unit 510, a battery 520, a transceiver 505, and an antenna unit 500. The antenna unit 500 includes a plurality of antennas ANT1 to ANT3. The battery 520 supplies operating power to components of the electronic device. The transceiver 505 performs a transmission process to a signal to be transmitted and performs a reception process to a received signal. As illustrated in FIGS. 5C and 5D, the transceiver 505 may include a Baseband (BB) unit 530 and a radio frequency (RF) unit 540. For example, as illustrated in FIGS. 5A and 5B, the transceiver 505 may be implemented as a single chip. For another example, as illustrated in FIGS. 5C and 5D, the transceiver 505 may be implemented as two chips. For another example, the transceiver 505 may be implemented as three or more chips.
  • The BB unit 530 of the transceiver 505 processes data to be transmitted in a baseband, and processes received data processed in the RF unit 540 in the baseband. For example, as shown in FIGS. 10A to 10C, the BB unit 530 may include digital BB units 532 and 534 having processors and memories and analog BB units 536 and 538 having Analog-to-Digital Converters (ADCs) and filters. The RF unit 540 performs an RF process to the data to be transmitted, which have been processed in the BB unit 530, and performs the RF process to the data received through the antenna unit 500. For example, the RF unit 540 may include an analog filter, a Low-Noise Amplifier (LNA), a mixer, a Voltage-Controlled Oscillator (VCO), a frequency synthesizer, and a Power Amplifier (PA). The plurality of antennas ANT1 to ANT3 included in the antenna unit 500 is for signal transmission between the base station and the mobile electronic device, i.e. the wireless terminal, in a wireless communication system. Although it is illustrated that the plurality of antennas are not classified into transmitting antennas and receiving antennas, the plurality of antennas may include an appropriate number of transmitting antennas and an appropriate number of receiving antennas.
  • The control unit 510 controls a power saving operation according to various embodiments of the present disclosure. To this end, the control unit 510 controls the transceiver 505 and controls an operation of a timer (not illustrated) (e.g. inactivity timer t1, t11, and t2). That is, the control unit 510 may control the transceiver 505 so that the transceiver 505 is operated in a normal power mode or a low power mode. The normal power mode represents a mode in which power is normally supplied. This normal power mode is a relatively high power mode in comparison with the low power mode. On the contrary, the low power mode is a mode for reducing power consumption of the mobile electronic device. In this mode, power is adjusted to be supplied in comparison with the case where power is normally supplied.
  • Referring to FIG. 5A, the control unit 510 may be separated from the transceiver 505. For another example, as illustrated in FIG. 5B, the control unit 510 may be included in the transceiver 505. In the case where the control unit 510 is included in the transceiver 505 and the transceiver 505 includes the BB unit 530 and the RF unit 540, the control unit 510 may be included in the BB unit 530 or the RF unit 540.
  • For example, in the low power mode, partial antennas from among the plurality of antennas ANT1 to ANT3 included in the antenna unit 500 may be turned off. As illustrated in FIG. 10A, the control unit 510 may control an antenna path unit 550 in response to a power mode control signal so as to block paths between the partial antennas and the transceiver 505, thereby turning off the partial antennas. Here, power supplied to corresponding components of the RF unit (e.g. the analog filter, low-noise amplifier, and mixer) is also blocked. Although it is illustrated that the antenna unit 500 includes only the plurality of antennas ANT1 to ANT3, this configuration is just an example. For another example, the antenna unit 500 may include partial elements (e.g. capacitor) supplied with power, in addition to the plurality of antennas ANT1 to ANT3. In this case, the operation of turning off the partial antennas may include an operation of blocking the paths between the partial antennas and the transceiver 505 and an operation of blocking the power supplied to the partial elements. By blocking only the power supplied to the partial elements, an effect of power saving may be obtained. By additionally blocking the power supplied to the corresponding components of the RF unit, the power saving effect may be improved.
  • For another example, an adjusted voltage supplied in the low power mode may have a lower level than that of a voltage normally supplied to partial components (e.g. power amplifier) of the transceiver 505. For another example, an adjusted voltage supplied in the low power mode may be a voltage that enables partial components (e.g. analog-to-digital converter) of the transceiver 505 to perform only partial operations (e.g. 5-stage conversion operation) of normal operations (e.g. 10-stage conversion operation).
  • In one embodiment, the control unit 510 changes a power mode of the electronic device into the low power mode when a data non-transmission period is detected during a predefined time in an active state. The predefined time may be set to be shorter that a time set to change the active state to an idle state.
  • The control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring a control channel or transmission data in the active state. When the control unit 510 detects that there is data to be received as a result of monitoring the control channel in the low power mode, the control unit 510 further performs an operation of changing a power supply mode of the electronic device into the normal power mode. When the control unit 510 detects that there is data to be transmitted as a result of monitoring the transmission data in the low power mode, the control unit 510 further performs the operation of changing the power supply mode of the electronic device into the normal power mode. The control channel may be one of the HS-SCCH and the PDCCH.
  • In the low power mode, the control unit 510 low-power adjusts power supplied to a partial component of the electronic device. The partial component of the electronic device may be one of the radio frequency unit and the baseband unit. When the data non-transmission period where data reception does not occur for the predefined time is detected in the active state, the partial component of the electronic device may be a component on a reception path. When the data non-transmission period where data transmission does not occur for the predefined time is detected in the active state, the partial component of the electronic device may be a component on a transmission path.
  • In another embodiment, the control unit 510 blocks at least one of the paths between the transceiver and the plurality of antennas when the data non-transmission period is detected during the predefined time in the active state where data transmission/ reception is enabled. The transceiver includes the radio frequency unit and the baseband unit. The predefined time may be set to be shorter that the time set to change the active state to the idle state.
  • The control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/received as a result of monitoring the control channel or transmission data, the control unit 510 further performs an operation of opening the blocked paths between the transceiver and the plurality of antennas. The control channel may be one of the HS-SCCH and the PDCCH.
  • In another embodiment, the control unit 510 low-power adjusts power supplied to at least one of a plurality of components included in the transceiver when the data non-transmission period is detected during the predefined time in the active state where data transmission/reception is enabled. The transceiver includes the radio frequency unit and the baseband unit. The predefined time may be set to be shorter than a time set to change the active state to an idle state.
  • The control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/received as a result of monitoring the control channel or transmission data, the control unit 510 further performs an operation of normalizing the low-power adjusted power. The control channel may be one of the HS-SCCH and the PDCCH.
  • FIG. 6 is a flowchart illustrating a process of a power saving operation according to an embodiment of the present disclosure. This process may be controlled by the control unit 510 illustrated in FIGS. 5A to 5D. Here, it will be exemplarily described that the power saving operation is performed in the case of a downlink from a base station to a terminal. However, it should be noted that this power saving operation may be performed in substantially the same manner in the case of an uplink from the terminal to the base station.
  • Referring to FIG. 6, a timer value is initialized to be 0 in operation 602. In operations 604 and 606, demodulation and decoding operations are periodically performed to the control channel such as the HS-SCCH or PDCCH. When it is detected that a result of the decoding operation is successful in operation 608, it is determined that there is data to be transmitted from the base station to the terminal, and the timer value is initialized to be 0 in operation 610. It is determined whether a current power mode is the low power mode in operation 612. In the case of the low power mode, the power mode is changed to the normal power mode to receive data in operation 614. In the case of the normal power mode, the process proceeds to operation 604. According to data packets arriving in each cycle, the operations of the right loop (604 → 606 → 608 → 610 → 612 or 604 → 606 → 608 → 610 → 612 → 614) are repeated.
  • When a data packet is not received, a result of the decoding operation for the control channel such as the HS-SCCH or PDCCH is determined to be a failure. When the result of the decoding operation is determined to be a failure, the timer value increases in operation 616. The operations of the left loop (604 → 606 → 608 → 616 → 618) are repeatedly performed until the timer value reaches t11. When it is determined that the timer value reaches t11 in operation 618, it is determined that the data packets are not received for a while, and the power mode is changed to the low power mode in operation 620.
  • FIG. 7 is a flowchart illustrating a process of a power saving operation according to another embodiment of the present disclosure. This process may be controlled by the control unit 510 illustrated in FIGS. 5A to 5D. Here, it will be exemplarily described that the power saving operation is performed in the case of a downlink from a base station to a terminal. However, it should be noted that this power saving operation may be performed in substantially the same manner in the case of an uplink from the terminal to the base station. Operations 702 to 714 are the same as operations 602 to 614 illustrated in FIG. 6, and operations 720, 722, and 726 are the same as operations 616, 618, and 620 illustrated in FIG. 6. That is, the process illustrated in FIG. 7 further includes operations 716, 718, and 724 in comparison with the process illustrated in FIG. 6.
  • Referring to FIG. 7, before switching to the low power mode after reception of data is stopped, it is determined whether signal quality is sufficiently high to decode a control channel that will be possibly received. When a data packet is not received in the left loop, a result of the decoding operation of the control channel such as the HS-SCCH or PDCCH is determined to be a failure. In operation 716, a value of signal quality such as a Signal to Interference Ratio (SIR) is determined. When the signal quality value is greater than a threshold value, the power mode is changed to the low power mode in operation 726. When the signal quality value is not greater than the threshold value, the power mode is changed to the normal power mode in operation 718. That is, the SIR level is determined again in order to decode the common control channel such as the HS-SCCH or PDCCH that indicates data that will possibly arrive, even after data transmission is stopped.
  • FIGS. 8A and 8B are diagrams illustrating that power consumption is reduced according to embodiments of the present disclosure.
  • FIG. 8A illustrates power consumption according to state transition in a 3G communication system of the related art, and FIG. 8B illustrates power consumption in accordance with a power saving operation according to the embodiments of the present disclosure.
  • Referring to FIG. 8A, data transmission is stopped, and high power of CELL_DCH state is consumed during the inactivity time of t1 (period P3) by a command from a base station. On the contrary, referring to FIG. 8B, the power of CELL_DCH state is consumed only during the time t11 (period P31) that is shorter than t1, and then the power mode is changed to the CELL_DCH low power mode during the time of t1-t11 (period P32). In the CELL_DCH low power mode, power is less consumed than in the CELL_DCH state, i.e. CELL_DCH high power mode. Thus, by as much as this difference, power consumption may be reduced.
  • FIGS. 9A and 9B are diagrams illustrating that power consumption is reduced according to embodiments of the present disclosure. FIG. 9A illustrates power consumption according to state transition in a 4G communication system of the related art, and FIG. 9B illustrates power consumption in accordance with a power saving operation according to an embodiment of the present disclosure.
  • Referring to FIG. 9A, data transmission is stopped and high power of RRC_CONNECTED state is consumed during the inactivity time of t1 (period P13) by a command from a base station. On the contrary, referring to FIG. 9B, the power of RRC_CONNECTED state is consumed only during the time t11 (period P131) that is shorter than t1, and then the power mode is changed to the RRC_CONNECTED low power mode during the time of t1-t11 (period P132). In the RRC_CONNECTED low power mode, power is less consumed than in the RRC_CONNECTED state, i.e. RRC_CONNECTED normal power mode. Thus, by as much as this difference, power consumption may be reduced.
  • FIGS. 10A to 10C are diagrams illustrating various modifications of a power saving operation according to embodiments of the present disclosure. These diagrams illustrate various examples of the power saving operation performed by the control unit 510 illustrated in FIGS. 5A to 5D.
  • FIG. 10A is a diagram illustrating a power saving operation performed according to an embodiment of the present disclosure.
  • Referring to FIG. 10A, it is exemplarily illustrated that the transceiver 505 includes Digital BB (DBB) units 532 and 534, Analog BB (ABB) units 536 and 538, RF integrated circuits (ICs) 542 and 544, and a Power Amplifier (PA) 546. However, it should be noted that various embodiments of the present disclosure are not limited thereto. The DBB units 532 and 534 and the ABB units 536 and 538 constitute the BB unit of the transceiver 505. The RF ICs 542 and 544 and the power amplifier 546 constitute the RF unit of the transceiver 505. The DBB unit 532, the ABB unit 536, and the RF IC 542 are components on a reception path, and the DBB unit 534, the ABB unit 538, the RF IC 544, and the power amplifier 546 are components on a transmission path. Here, this division of the components of the transceiver is merely for differentiating the components by the transmission and reception paths and functions based on data processing operations. Therefore, in the case where the components are actually implemented as chips, the components may be differently implemented. For example, the DBB units 532 and 534 and the ABB units 536 and 538 may be implemented as a single chip. For another example, the DBB units 532 and 534 may be implemented as a single chip, and the ABB units 536 and 538 may be implemented as another single chip. For another example, the RF ICs 542 and 544 may be implemented as a single chip. For another example, the DBB units 532 and 534, the ABB units 536 and 538, and the RF ICs 542 and 544 may be implemented as a single chip. The DBB units 532 and 534 may include a processor, a memory and etc. The ABB units 536 and 538 may include an ADC, filter and etc. The RF ICs 542 and 544 may include an analog filter, a low noise amplifier, a mixer, a VCO, a frequency synthesizer and etc.
  • In the antenna path unit 550, transmitting antennas and receiving antennas may be combined. Although it is illustrated that one transmitting antenna ANT_TX is combined with two receiving antennas ANT_RX1 and ANT_RX2, the numbers of the antennas are not limited. The antenna path unit 550 forms reception paths between the receiving antennas ANT_RX1 and ANT_RX2 and a receiver (RF IC 542), or a reception path between the transmitting antenna ANT_TX and a transmitter (power amplifier 546). This antenna path unit 550 may include a switch.
  • These electronic device components may be operated in the normal power mode or low power mode according to a power mode control signal provided from the control unit 510 illustrated in FIGS. 5A to 5D. In the normal power mode, power is normally supplied to the components. Here, the normal power represents a voltage that is supplied in the active state such as the CELL_DCH state or RRC_CONNECTED state where data transmission/reception is enabled. The control signal is a signal for triggering the low power mode when the control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data. The control signal may be provided to partial components from among the antenna path unit 550, the power amplifier 546, the RF ICs 542 and 544, the ABBs 536 and 538, and the DBBs 532 and 534.
  • FIG. 10B is a diagram illustrating a power saving operation performed according to an embodiment of the present disclosure.
  • Referring to FIG. 10B, the control unit 510 (not illustrated) blocks at least one of the paths between the transceiver and the plurality of antennas when the data non-transmission period is detected during a predefined time in the active state where data transmission/reception is enabled. The control unit 510 may block power supplied to components of the transceiver which correspond to the blocked path. The predefined time may be set to be shorter that the time set to change the active state to the idle state. The control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/received as a result of monitoring, the control unit 510 further performs an operation of opening the blocked paths between the transceiver and the plurality of antennas.
  • For example, when it is detected that there is not data to be transmitted to a base station and thus the power mode is changed to the low power mode, a reception path (e.g. path 2) of the antenna path unit 550 through one of the two receiving antennas ANT_RX1 and ANT_RX2 may be blocked in response to the power mode control signal. For another example, in the case where a plurality of transmitting antennas ANT_TX exist, a transmission path of the antenna path unit 550 through one of the plurality of transmitting antennas may be blocked in response to the power mode control signal. That is, when the reception path or transmission path is blocked, power supplied to components of the transceiver corresponding to the blocked path may also be blocked. When reception path 2 of the antenna path unit 550 is blocked, power supplied to corresponding components (e.g. an analog filter, a low noise filter, and a mixer) of the RF IC 542 may also be blocked. The antenna unit 500 may include partial elements (e.g. capacitor) supplied with power, in addition to the plurality of antennas. In this case, an operation of blocking paths between partial antennas and the transceiver and an operation of blocking the power supplied to the partial elements may be further included. Therefore, since the power supplied to components of the transceiver corresponding to the blocked paths of the antenna path unit 550 and/or elements that may be included in the antenna unit 500 is blocked, power consumption may be reduced.
  • FIG. 10C is a diagram illustrating a power saving operation performed according to an embodiment of the present disclosure.
  • Referring to FIG. 10C, the control unit 510 (not illustrated) low-power adjusts power supplied to at least one of a plurality of components of the transceiver when the data non-transmission period is detected during a predefined time in the active state where data transmission/reception is enabled. The predefined time may be set to be shorter than the time set to change the active state to the idle state. The control unit 510 detects the data non-transmission period where data transmission/reception does not occur during the predefined time by monitoring the control channel or transmission data in the active state. When the control unit 510 detects that there is data to be transmitted/ received as a result of monitoring, the control unit 510 performs an operation of normalizing the low-power adjusted power.
  • For example, a power supply voltage supplied to partial components from among components of the DBB units 532 and 534, the ABB units 536 and 538, the RF ICs 542 and 544, and the power amplifier 546 may be adjusted to be decreased in response to the power mode control signal in the low power mode. For example, when it is detected that there is not data to be transmitted to a base station and thus the power mode is changed to the low power mode, a level of the power supply voltage supplied to partial components (e.g. power amplifier) from internal components of the DBB unit 532, the ABB unit 536, and the RF IC 542 may be adjusted to be decreased. For another example, in the case of performing a 10-step conversion operation of an ADC included in the ABB unit 536, the power supply voltage may be such supplied that only 5 steps are performed.
  • As described above, according to various embodiments of the present disclosure, it is detected whether there is data to be transmitted/received when a mobile electronic device such as a smartphone or a cell phone is in an active state where data transmission/reception is enabled. As a result of the detection, the power mode is changed to the low power mode in a data stop period there is not data to be transmitted/received. Power is less consumed in the low power mode than in the active state where high power is consumed, thereby reducing power consumption of the mobile electronic device.
  • According to the various embodiments of the present disclosure, program commands for performing operations implemented by various computers may be recorded in a computer-readable medium. The computer readable medium may include one or a combination of a program command, a data file, and a data structure. The program command may be specially designed for the present disclosure or may be well known and available in the art. Examples of the computer readable recording medium include hardware devices specially configured to store and perform the program commands, such as hard disks, floppy disks, magnetic media such as magnetic tapes, optical media such as CD-ROMs and DVDs, magneto-optical media such as optical disks, ROMs, RAMs, and flash memories. Examples of the program command include machine language codes made by compilers and high-level language codes that can be executed by computers using interpreters. In the case where a part or the entirety of the mobile electronic devices described in the present disclosure is implemented as a computer program, a computer-readable recording medium in the computer program is stored is also included in the present disclosure.
  • Therefore, the scope of the present disclosure is defined not by the detailed description of the present disclosure but by the appended claims.
  • While the present disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present disclosure as defined by the appended claims.

Claims (14)

  1. An electronic device comprising:
    a plurality of antennas (500);
    a transceiver (505); and
    a controller (510);
    wherein the controller (510) is configured to:
    determine that a data non-transmission period is detected based on a failure of a decoding of a control channel in a normal power mode of the electronic device;
    switch, during an active state for transmitting data and receiving data, from the normal power mode to a low power mode of the electronic device after detecting the data non-transmission period in the normal power mode, the low power mode capable of decoding a next control channel while maintaining the active state,
    wherein the active state is a radio resource channel, RRC, connected state.
  2. The electronic device of claim 1, wherein the controller, in order to switch to the low power mode, is configured to operate at least one antenna of the plurality of antennas in order to decode the next control channel by turning off at least another antenna of the plurality of antennas.
  3. The electronic device of claim 1,
    wherein the data non-transmission period is shorter than a period of an inactivity timer defined for switching from the active state to an idle state,
    wherein the idle state is an RRC idle state.
  4. The electronic device of claim 1, wherein the data non-transmission period is shorter than a time for transition to a state incapable of transmitting data.
  5. The electronic device of claim 1, wherein the controller (510) is in order to determine that the data non-transmission period is detected, configured to control the transceiver to receive a signal for obtaining the result of the decoding of the control channel in the normal power mode.
  6. The electronic device of claim 1, wherein the controller (510) is configured to, if a number, N, of decoding failures reaches a threshold, determine that the data non-transmission period is detected.
  7. The electronic device of claim 6,
    wherein the threshold corresponds to a certain time, and
    wherein the certain time is shorter than a time defined for transition from the active state to an idle state.
  8. The electronic device of claim 1, wherein the controller (510) is further configured to decode the next control channel in the low power mode after switching to the low power mode of the electronic device.
  9. The electronic device of claim 1, wherein the controller (510) is, in order to switch to the low power mode, configured to operate at least one of the plurality of antennas (500) in the low power mode by blocking at least one of paths between the transceiver (505) and the plurality of antennas (500).
  10. The electronic device of claim 9, wherein the controller (510) is, in order to switch to the low power mode, configured to block power supplied to components of the transceiver (505) which corresponds to the blocked at least one of paths.
  11. The electronic device of claim 1, wherein the controller (510) is, in order to switch to the low power mode, configured to operate the transceiver (505) in the low power mode by lowering a power supplied to each of at least one component of the transceiver (505).
  12. The electronic device of claim 1, wherein the controller (510) is configured to:
    lower a power supplied to a component on a reception path, in response to detecting that the data non-transmission period where data reception is not performed in the normal power mode, and
    lower a power supplied to a component on a transmission path in response to detecting that the data non-transmission period where data transmission is not performed in the normal power mode.
  13. The electronic device of claim 1,
    wherein the control channel is a physical downlink control channel, PDCCH, and
    wherein the controller (510) is included in at least one of a radio frequency, RF, unit (540) or a baseband unit (530) of the transceiver (505).
  14. A method performed by an electronic device configured to:
    determine that a data non-transmission period is detected based on a failure of a decoding of a control channel in a normal power mode of the electronic device;
    switch, during an active state for transmitting data and receiving data, from the normal power mode to a low power mode of the electronic device after detecting the data non-transmission period in the normal power mode, the low power mode capable of decoding a next control channel while maintaining the active state,
    wherein the active state is a radio resource channel, RRC, connected state.
EP14759965.8A 2013-03-06 2014-02-28 Mobile device for power reduction and method thereof Active EP2965437B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361773402P 2013-03-06 2013-03-06
KR1020130037600A KR102071550B1 (en) 2013-03-06 2013-04-05 Mobile device for power reduction and method thereof
PCT/KR2014/001671 WO2014137108A1 (en) 2013-03-06 2014-02-28 Mobile device for power reduction and method thereof

Publications (3)

Publication Number Publication Date
EP2965437A1 EP2965437A1 (en) 2016-01-13
EP2965437A4 EP2965437A4 (en) 2017-02-15
EP2965437B1 true EP2965437B1 (en) 2020-08-12

Family

ID=51488430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14759965.8A Active EP2965437B1 (en) 2013-03-06 2014-02-28 Mobile device for power reduction and method thereof

Country Status (7)

Country Link
US (3) US10321404B2 (en)
EP (1) EP2965437B1 (en)
KR (1) KR102071550B1 (en)
CN (1) CN105165075B (en)
AU (1) AU2014226776B2 (en)
RU (1) RU2663219C2 (en)
WO (1) WO2014137108A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102172014B1 (en) * 2014-08-13 2020-10-30 삼성전자주식회사 Controlling Method based on a communication status and Electronic device supporting the same
CN107306440B (en) * 2016-04-20 2019-12-24 中兴通讯股份有限公司 Internet of things data transmission method and Internet of things terminal
CN107566600A (en) * 2016-06-30 2018-01-09 张家港保税区冠祥贸易有限公司 A kind of 4G to close a terminal automatically method
US10602444B2 (en) * 2017-12-22 2020-03-24 Cypress Semiconductor Corporation Reducing power consumption in computing devices with wireless network interfaces
EP3857983A4 (en) * 2018-09-26 2022-05-25 Panasonic Intellectual Property Corporation of America Power saving signal and procedure design
JP7410775B2 (en) * 2020-03-27 2024-01-10 日本光電工業株式会社 Information generating devices, computer programs and non-transitory computer readable media
US11937193B2 (en) * 2020-04-01 2024-03-19 Qualcomm Incorporated Timing improvements for wireless communications systems

Family Cites Families (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4851830A (en) * 1987-10-20 1989-07-25 Telefind Corp. Paging receiver with continuously tunable antenna
US5835855A (en) * 1996-06-12 1998-11-10 3Com Corporation Antenna scanning system with low frequency dithering
JP3428629B2 (en) * 1999-03-26 2003-07-22 日本電気株式会社 Mobile phone device and power control method thereof
CN1213545C (en) * 2000-10-05 2005-08-03 三星电子株式会社 TSTD apparatus and method for TDD CDMA mobile communication system
WO2002047321A2 (en) * 2000-12-08 2002-06-13 Telefonaktiebolaget L M Ericsson (Publ) Method for power save in a mobile terminal
US6851065B2 (en) * 2001-09-10 2005-02-01 Dell Products L.P. System and method for executing resume tasks during a suspend routine
ES2273303T3 (en) * 2001-10-01 2007-05-01 Research In Motion Limited CONTACT MANAGEMENT FOR MOBILE COMMUNICATION DEVICES IN PACKAGE SWITCHING RADIOELECTRIC SYSTEMS.
KR100575973B1 (en) * 2002-01-09 2006-05-02 삼성전자주식회사 Method and apparatus for detecting discontinuous transmission interval in a cdma mobile communication system
US8036710B2 (en) 2004-05-07 2011-10-11 Qualcomm, Incorporated Power-efficient multi-antenna wireless device
JP4323381B2 (en) * 2004-06-03 2009-09-02 Okiセミコンダクタ株式会社 Wireless receiver
CN101103572B (en) * 2005-01-20 2011-03-23 松下电器产业株式会社 Transmitting apparatus, receiving apparatus, and wireless communication method
ATE517389T1 (en) * 2005-05-10 2011-08-15 St Ericsson Sa SYSTEM AND METHOD FOR DATA TRANSMISSION
JP2007195076A (en) * 2006-01-20 2007-08-02 Nec Corp Radio communication system, and transmission power control method and device thereof
JP4829029B2 (en) * 2006-08-02 2011-11-30 株式会社東芝 Memory system and memory chip
US7835299B2 (en) * 2007-09-24 2010-11-16 Intel Corporation Method and system for power consumption reduction by network devices as a function of network activity
US8880564B2 (en) * 2007-10-11 2014-11-04 Microsoft Corporation Generic model editing framework
US8099043B2 (en) 2008-05-13 2012-01-17 Electronics And Telecommunications Research Institute Transmit channel in wideband high frequency wireless system using multiple transmit antenna, and method thereof
DE102008048468A1 (en) 2008-09-24 2010-04-08 Siemens Enterprise Communications Gmbh & Co. Kg Method, telephone, telecommunication system and device for controlling the energy consumption of a telephone
US8175100B2 (en) * 2008-10-15 2012-05-08 Qualcomm Incorporated Transmission scheduling optimization method and wireless user equipment device
US8095080B2 (en) * 2008-12-02 2012-01-10 Broadcom Corporation Power management unit for configurable receiver and transmitter and methods for use therewith
US8462736B2 (en) * 2009-06-19 2013-06-11 Telefonaktiebolaget L M Ericsson (Publ) Telecommunications method and apparatus for facilitating positioning measurements
EP2453592A4 (en) * 2009-07-06 2016-06-29 Lg Electronics Inc Method and apparatus for transmitting/receiving control information for additional broadcast information in a wireless communication system
BR112012009800B1 (en) * 2009-11-09 2020-12-08 Zte Corporation method for determining a slot format of a fractional dedicated physical control channel (f-dpch) and apparatus for determining a slot format of a fractional dedicated physical control channel (f-dpch)
JP2011166699A (en) * 2010-02-15 2011-08-25 Ntt Docomo Inc Radio base station device, mobile terminal device, and radio communication method
CN102792753A (en) * 2010-03-12 2012-11-21 京瓷株式会社 Wireless communication system, high-power base station, low-power base station, and wireless communication method
US20110249022A1 (en) * 2010-04-08 2011-10-13 Rajesh Poornachandran Techniques for managing power use
KR101801185B1 (en) * 2010-08-24 2017-11-24 엘지전자 주식회사 Mobile communication terminal
US8442475B2 (en) 2010-11-15 2013-05-14 Qualcomm Incorporated Power conservation in wireless access terminals using integrated proxy function
EP2458922B1 (en) * 2010-11-29 2014-03-26 Telefonaktiebolaget L M Ericsson (Publ) Receiver apparatus and method
WO2012086039A1 (en) * 2010-12-22 2012-06-28 富士通株式会社 Mobile station, base station, wireless communication system and wireless communication method
KR101723389B1 (en) * 2011-01-10 2017-04-18 삼성전자주식회사 Method and apparatus for adaptive operation of application
CA2827218C (en) * 2011-02-11 2016-06-28 Research In Motion Limited Time-advanced random access channel transmission
US20140031063A1 (en) * 2011-04-06 2014-01-30 Lg Electronics Inc. Method for transmitting and receiving parameter update information, and apparatus for same
JP5961853B2 (en) * 2011-04-27 2016-08-02 シャープ株式会社 Terminal, base station, communication system and communication method
US8594747B2 (en) * 2011-05-06 2013-11-26 Apple Inc. Adaptive fast dormancy in a mobile device
US8744401B2 (en) * 2011-05-20 2014-06-03 Continental Automotive Systems, Inc. Enhanced telematic emergency response
US9161371B2 (en) 2011-07-21 2015-10-13 Qualcomm Incorporated Power optimization using scheduling request delay
JP5927801B2 (en) * 2011-08-02 2016-06-01 シャープ株式会社 Base station, terminal and communication method
EP2725845B1 (en) * 2011-08-05 2018-05-16 Panasonic Intellectual Property Corporation of America Terminal, transmitting device, reception quality reporting method and reception method
US9392596B2 (en) * 2011-10-19 2016-07-12 Lg Electronics Inc. Method for allowing MTC terminal to transmit and receive signal in wireless communication system
JP5918507B2 (en) * 2011-11-08 2016-05-18 株式会社Nttドコモ Radio communication system, interference measurement method, radio base station apparatus, and user terminal
US9476966B2 (en) * 2011-12-05 2016-10-25 Qualcomm Incorporated Methods and apparatuses for use in selecting a transmitting device for use in a positioning function
US9004145B2 (en) * 2012-03-29 2015-04-14 Boothseal Llc Securable cover apparatus for trade show booths
US9021287B2 (en) * 2012-09-04 2015-04-28 Intel Mobile Communications GmbH Circuit arrangement and method for low power mode management with delayable request
US10194423B2 (en) * 2012-09-28 2019-01-29 Lg Electronics Inc. Uplink transmission method and uplink transmission device
EP3614601B1 (en) * 2013-01-14 2021-05-19 LG Electronics Inc. Method and user equipment for receiving downlink signal and method and base station for transmitting downlink signal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AU2014226776A1 (en) 2015-09-24
KR102071550B1 (en) 2020-01-31
RU2663219C2 (en) 2018-08-02
US20190297578A1 (en) 2019-09-26
CN105165075B (en) 2019-07-05
KR20140111211A (en) 2014-09-18
EP2965437A1 (en) 2016-01-13
US10863440B2 (en) 2020-12-08
AU2014226776B2 (en) 2018-01-18
US20210092683A1 (en) 2021-03-25
EP2965437A4 (en) 2017-02-15
US10321404B2 (en) 2019-06-11
US11523344B2 (en) 2022-12-06
RU2015142276A (en) 2017-04-10
WO2014137108A1 (en) 2014-09-12
US20140256386A1 (en) 2014-09-11
CN105165075A (en) 2015-12-16
AU2014226776A2 (en) 2015-09-24

Similar Documents

Publication Publication Date Title
US11523344B2 (en) Mobile device for power reduction and method thereof
KR102028117B1 (en) Apparatus and method for power saving by transmission interval in wireless communication system
EP2695315B1 (en) Techniques to control paging for fixed devices
CN113796039A (en) Determining PDCCH monitoring during on-duration in energy saving mode
US11678271B2 (en) Method of management of a wireless interface of a device and corresponding wireless device
US20240022387A1 (en) Transmission processing method, terminal and network-side device
US20140355504A1 (en) Handling a State of a Device
US9565631B2 (en) Method and arrangement for controlling discontinuous reception by a user equipment
WO2014020560A1 (en) Wireless devices, methods and apparatus and computer programs therefor
CN111602432A (en) Energy saving mechanism using cross-slot scheduling in mobile communication
CN115699987A (en) Method and apparatus for signal processing
US9078266B2 (en) Devices and methods for facilitating discontinuous transmission on access terminals
US10512039B2 (en) Device-driven power scaling in advanced wireless modem architectures
CN115428529A (en) Power saving method for user equipment using cell group and network node thereof
US9363750B2 (en) Devices and methods for control channel decoding with preamble skip to reduce decoding time
WO2021259343A1 (en) Efficient adaption of ue power saving in 5g new radio (nr)
CN114846855B (en) Communication method, apparatus, and computer readable medium
CN115150872A (en) Channel transmission method and equipment

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150911

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20170116

RIC1 Information provided on ipc code assigned before grant

Ipc: H04B 1/40 20150101AFI20170110BHEP

Ipc: H04W 52/02 20090101ALI20170110BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20181002

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200424

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014068894

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1302570

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200915

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201113

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201112

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201112

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1302570

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201212

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014068894

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

26N No opposition filed

Effective date: 20210514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240123

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240122

Year of fee payment: 11

Ref country code: GB

Payment date: 20240122

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240124

Year of fee payment: 11

Ref country code: FR

Payment date: 20240123

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200812